From: Miguel Aguilar miguel.aguilar@ridgerun.com

This patch adds support for the Voice Codec CQ0093.

This driver was tested on a DM355 EVM rev C.

Signed-off-by: Miguel Aguilar miguel.aguilar@ridgerun.com --- sound/soc/codecs/Kconfig | 4 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/cq93vc.c | 377 +++++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/cq93vc.h | 23 +++ 4 files changed, 406 insertions(+), 0 deletions(-) create mode 100644 sound/soc/codecs/cq93vc.c create mode 100644 sound/soc/codecs/cq93vc.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 0edca93..55d1287 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -19,6 +19,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_AK4104 if SPI_MASTER select SND_SOC_AK4535 if I2C select SND_SOC_AK4642 if I2C + select SND_SOC_CQ0093VC if ARCH_DAVINCI_DM365 select SND_SOC_CS4270 if I2C select SND_SOC_MAX9877 if I2C select SND_SOC_PCM3008 @@ -96,6 +97,9 @@ config SND_SOC_AK4535 config SND_SOC_AK4642 tristate

+config SND_SOC_CQ0093VC + tristate + # Cirrus Logic CS4270 Codec config SND_SOC_CS4270 tristate diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile index fb4af28..a3e713c 100644 --- a/sound/soc/codecs/Makefile +++ b/sound/soc/codecs/Makefile @@ -6,6 +6,7 @@ snd-soc-ad73311-objs := ad73311.o snd-soc-ak4104-objs := ak4104.o snd-soc-ak4535-objs := ak4535.o snd-soc-ak4642-objs := ak4642.o +snd-soc-cq93vc-objs := cq93vc.o snd-soc-cs4270-objs := cs4270.o snd-soc-cx20442-objs := cx20442.o snd-soc-l3-objs := l3.o @@ -56,6 +57,7 @@ obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o obj-$(CONFIG_SND_SOC_AK4104) += snd-soc-ak4104.o obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o obj-$(CONFIG_SND_SOC_AK4642) += snd-soc-ak4642.o +obj-$(CONFIG_SND_SOC_CQ0093VC) += snd-soc-cq93vc.o obj-$(CONFIG_SND_SOC_CS4270) += snd-soc-cs4270.o obj-$(CONFIG_SND_SOC_CX20442) += snd-soc-cx20442.o obj-$(CONFIG_SND_SOC_L3) += snd-soc-l3.o diff --git a/sound/soc/codecs/cq93vc.c b/sound/soc/codecs/cq93vc.c new file mode 100644 index 0000000..e64af25 --- /dev/null +++ b/sound/soc/codecs/cq93vc.c @@ -0,0 +1,377 @@ +/* + * ALSA SoC CQ0093 Voice Codec Driver + * + * Copyright (C) 2009 Texas Instruments. + * + * Author: Miguel Aguilar miguel.aguilar@ridgerun.com + * + * Initial code: Hui Geng + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/delay.h> +#include <linux/pm.h> +#include <linux/i2c.h> +#include <linux/platform_device.h> +#include <linux/device.h> +#include <linux/clk.h> + +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/soc.h> +#include <sound/soc-dai.h> +#include <sound/soc-dapm.h> +#include <sound/initval.h> + +#include <mach/dm365.h> + +#include "cq93vc.h" + +#define AUDIO_NAME "cq0093" +#define CQ93VC_VERSION "0.1" + +/* + * Voice codec registers + * + * The base address for the registers used by this driver is shifted + * 0x80 from the original Voice Codec base adress since the first region + * of the Voice Codec registers is used by the Voice Codec Interface driver. + */ +#define VC_REG05 0x14 /* PGA and MIC Gain Control */ +#define VC_REG09 0x24 /* Digital Soft Mute/Attenuation Control */ +#define VC_REG12 0x30 /* Voice Codec Up/Down */ + +/* Registers bits */ +#define PGA_GAIN 0x07 +#define DIG_ATTEN 0x3F +#define MUTE 0x40 +#define POWER_ALL_ON 0xFD + +/* Codec private data */ +struct cq93vc_priv { + void __iomem *base; + unsigned int sysclk; + resource_size_t pbase; + size_t base_size; +}; + +/* + * Read to the cq0093 register space + */ +static inline unsigned int cq93vc_read(struct snd_soc_codec *codec, + unsigned int reg) +{ + struct cq93vc_priv *cq93vc = codec->private_data; + + return __raw_readb(cq93vc->base + reg); +} + +/* + * Write to the cq0093 register space + */ +static int cq93vc_write(struct snd_soc_codec *codec, unsigned int reg, + unsigned int value) +{ + struct cq93vc_priv *cq93vc = codec->private_data; + + __raw_writeb(value, cq93vc->base + reg); + return 0; +} + +static int cq93vc_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + return 0; +} + +static const struct snd_kcontrol_new cq93vc_snd_controls[] = { + SOC_SINGLE("PGA Capture Volume", VC_REG05, 0, 0x03, 0), + SOC_SINGLE("Mono DAC Playback Volume", VC_REG09, 0, 0x3f, 0), +}; + +static int cq93vc_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + u8 reg = cq93vc_read(codec, VC_REG09) & ~MUTE; + + if (mute) + cq93vc_write(codec, VC_REG09, reg | MUTE); + else + cq93vc_write(codec, VC_REG09, reg); + + return 0; +} + +static int cq93vc_add_controls(struct snd_soc_codec *codec) +{ + int err, i; + + for (i = 0; i < ARRAY_SIZE(cq93vc_snd_controls); i++) { + err = snd_ctl_add(codec->card, + snd_soc_cnew(&cq93vc_snd_controls[i], + codec, NULL)); + if (err < 0) + return err; + } + + return 0; +} + +static int cq93vc_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct cq93vc_priv *cq93vc = codec->private_data; + + switch (freq) { + case 22579200: + case 27000000: + case 33868800: + cq93vc->sysclk = freq; + return 0; + } + + return -EINVAL; +} + +static int cq93vc_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + switch (level) { + case SND_SOC_BIAS_ON: + /* all power is driven by DAPM system */ + cq93vc_write(codec, VC_REG12, POWER_ALL_ON); + break; + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + /* + * all power is driven by DAPM system, + * so output power is safe if bypass was set + */ + cq93vc_write(codec, VC_REG12, 0x0); + break; + case SND_SOC_BIAS_OFF: + /* force all power off */ + cq93vc_write(codec, VC_REG12, 0x0); + break; + } + codec->bias_level = level; + + return 0; +} + +#define CQ93VC_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000) +#define CQ93VC_FORMATS (SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE) + +static struct snd_soc_dai_ops cq93vc_dai_ops = { + .hw_params = cq93vc_hw_params, + .digital_mute = cq93vc_mute, + .set_sysclk = cq93vc_set_dai_sysclk, +}; + +struct snd_soc_dai cq93vc_dai = { + .name = "cq93vc", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = CQ93VC_RATES, + .formats = CQ93VC_FORMATS,}, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 2, + .rates = CQ93VC_RATES, + .formats = CQ93VC_FORMATS,}, + .ops = &cq93vc_dai_ops, +}; +EXPORT_SYMBOL_GPL(cq93vc_dai); + +static int cq93vc_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF); + + return 0; +} + +static int cq93vc_resume(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + + cq93vc_set_bias_level(codec, codec->suspend_bias_level); + + return 0; +} + +static struct snd_soc_device *cq93vc_socdev; + +static int cq93vc_probe(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct device *dev = &pdev->dev; + struct cq93vc_priv *cq93vc; + struct snd_soc_codec *codec; + struct resource *res, *mem; + int ret; + + dev_info(dev, "CQ0093 Voice Codec %s\n", CQ93VC_VERSION); + + cq93vc = kzalloc(sizeof(struct cq93vc_priv), GFP_KERNEL); + if (cq93vc == NULL) { + dev_dbg(dev, "%s: could not allocate memory for private data\n", + pdev->name); + return -ENOMEM; + } + + codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL); + if (codec == NULL) { + dev_dbg(dev, "%s: could not allocate memory for codec data\n", + pdev->name); + ret = -ENOMEM; + goto fail1; + } + + res = cq93vc_resources; + + cq93vc->pbase = res->start; + cq93vc->base_size = resource_size(res); + + mem = request_mem_region(cq93vc->pbase, + cq93vc->base_size, "cq93vc"); + if (!mem) { + dev_dbg(dev,"%s: voice codec registers at %08x are not free\n", + pdev->name, cq93vc->pbase); + ret = -EBUSY; + goto fail2; + } + + cq93vc->base = ioremap(cq93vc->pbase, cq93vc->base_size); + if (cq93vc->base == NULL) { + dev_dbg(dev,"%s: can't ioremap mem resource.\n", + pdev->name); + ret = -ENOMEM; + goto fail3; + } + + mutex_init(&codec->mutex); + codec->private_data = cq93vc; + codec->name = "cq93vc"; + codec->owner = THIS_MODULE; + codec->read = cq93vc_read; + codec->write = cq93vc_write; + codec->set_bias_level = cq93vc_set_bias_level; + codec->dai = &cq93vc_dai; + codec->num_dai = 1; + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); + + socdev->card->codec = codec; + + /* Register pcms */ + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if (ret < 0) { + dev_err(dev, "%s: failed to create pcms\n", pdev->name); + goto fail4; + } + + /* Set the PGA Gain to 18 dB */ + cq93vc_write(codec, VC_REG05, PGA_GAIN); + + /* Set the DAC digital attenuation to 0 dB */ + cq93vc_write(codec, VC_REG09, DIG_ATTEN); + + /* Set controls */ + cq93vc_add_controls(codec); + + /* Off, with power on */ + cq93vc_set_bias_level(codec, SND_SOC_BIAS_STANDBY); + + /* Register sound card */ + ret = snd_soc_init_card(socdev); + if (ret < 0) { + dev_err(dev, "%s: failed to register card\n", pdev->name); + goto fail5; + } + + cq93vc_socdev = socdev; + + return 0; +fail5: + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); +fail4: + iounmap(cq93vc->base); +fail3: + release_mem_region(cq93vc->pbase, cq93vc->base_size); +fail2: + kfree(codec); +fail1: + kfree(cq93vc); + + return ret; +} + +static int cq93vc_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec = socdev->card->codec; + struct cq93vc_priv *cq93vc = codec->private_data; + + /* Power down chip */ + if (codec->control_data) + cq93vc_set_bias_level(codec, SND_SOC_BIAS_OFF); + + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); + + iounmap(cq93vc->base); + release_mem_region(cq93vc->pbase, cq93vc->base_size); + + kfree(codec); + kfree(cq93vc); + + cq93vc_socdev = NULL; + + snd_soc_unregister_dai(&cq93vc_dai); + + return 0; +} + +struct snd_soc_codec_device soc_codec_dev_cq93vc = { + .probe = cq93vc_probe, + .remove = cq93vc_remove, + .suspend = cq93vc_suspend, + .resume = cq93vc_resume, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_cq93vc); + +static __init int cq93vc_init(void) +{ + return snd_soc_register_dai(&cq93vc_dai); +} +module_init(cq93vc_init); + +static __exit void cq93vc_exit(void) +{ + snd_soc_unregister_dai(&cq93vc_dai); +} +module_exit(cq93vc_exit); + +MODULE_DESCRIPTION("Texas Instruments DaVinci ASoC CQ0093 Voice Codec Driver"); +MODULE_AUTHOR("Miguel Aguilar"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/codecs/cq93vc.h b/sound/soc/codecs/cq93vc.h new file mode 100644 index 0000000..8d37763 --- /dev/null +++ b/sound/soc/codecs/cq93vc.h @@ -0,0 +1,23 @@ +/* + * ALSA SoC CQ0093 Voice Codec Driver + * + * Copyright (C) 2009 Texas Instruments. + * + * Author: Miguel Aguilar miguel.aguilar@ridgerun.com + * + * Initial code: Hui Geng + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef _CQ93VC_H +#define _CQ93VC_H + +extern struct snd_soc_dai cq93vc_dai; +extern struct snd_soc_codec_device soc_codec_dev_cq93vc; +extern struct resource cq93vc_resources[]; + +#endif